@inproceedings{sgem2016s09063,
  title = {POSITIONING SYSTEM IN INDOOR ENVIRONMENT USING ULTRASOUND TECHNOLOGY},
  author = {Ilkovicova, Lubica and Kajanek, Pavol},
  booktitle = {SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 16th International Multidisciplinary Scientific GeoConference SGEM2016, Informatics, Geoinformatics and Remote Sensing},
  year = {2016},
  pages = {487-494},
  publisher = {Stef92 Technology},
  doi = {10.5593/sgem2016/b22/s09.063}
}